From: Dmitry Safonov <dima@xxxxxxxxxx> Subject: x86/amd_gart: print stacktrace for a leak with KERN_ERR It's under CONFIG_IOMMU_LEAK option which is enabled by debug config. Likely the backtrace is worth to be seen - so aligning with log level of error message in iommu_full(). Link: http://lkml.kernel.org/r/20200418201944.482088-46-dima@xxxxxxxxxx Signed-off-by: Dmitry Safonov <dima@xxxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxxxx> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/x86/kernel/amd_gart_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/kernel/amd_gart_64.c~x86-amd_gart-print-stacktrace-for-a-leak-with-kern_err +++ a/arch/x86/kernel/amd_gart_64.c @@ -159,7 +159,7 @@ static void dump_leak(void) return; dump = 1; - show_stack(NULL, NULL); + show_stack_loglvl(NULL, NULL, KERN_ERR); debug_dma_dump_mappings(NULL); } #endif _
